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Re: [Bug-gsl] gsl_spline bug again and again

From: Brian Gough
Subject: Re: [Bug-gsl] gsl_spline bug again and again
Date: Tue, 27 Jul 2004 11:49:43 +0100

Simon Ching writes:
 > Hello,
 > I am so sorry. The files are attached here.
 > I am getting so careless lately...

You need to include the final point (360,0), otherwise it is an
extrapolation not an interpolation.  The periodic boundary conditions
constrain the derivatives to match at 0 and 360.

Brian Gough

Network Theory Ltd,
Commercial support for GSL --- http://www.network-theory.co.uk/gsl/

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